March. 1920.] ALEXANDER: XeOTROPICAL CraNE-FlIES. 11 



darker. Mesostcrnum indistinctly dark gray. Halteres rather long, the knobs 

 dark brown with the apices dull yellow. Legs with the coxa; and trochanters 

 brownish yellow; femora yellowish brown, the tips broadly black; tibiae dark 

 brown, the tips narrowly blackened ; tarsi very long, dark brown, the metatarsi 

 longer than the tibiae. Wings subhyaline, with four dark brown subcostal 

 blotches and a heavy grayish brown clouding in all the cells ; cells C and Sc 

 strongly yellowish ; the first dark brown subcostal mark is at h and also in- 

 cludes the bases of cells R and M and extends into the costal cell ; the re- 

 maining three marks do not reach the costal cell but send paler clouds caudad 

 into cell R ; the third mark, at the origin of Rs. is the largest, stigma rather 

 pale brown ; the grayish brown clouds include the apical half of cells R, and 

 /?s ; most of cells ^5 to Cm,, conspicuous zigzag areas in cells Af . Cm and ist A ; 

 cell 2d A more uniformly darkened. Venation : Veins R-^ and R^ strongly di- 

 vergent, the base of cell Z?. being very narrow ; cell ist M^ much longer than 

 broad ; m-c\i distinct. 



Abdomen with the first tergite buffy with a dark brown median mark ; sec- 

 ond tergite dark with only the basal half pale laterally ; remaining tergites 

 darker brown, indistinctly ringed' caudally with paler; the lateral margins are 

 marked with a brown streak ; sternites similar to the tergites.; ninth segment 

 pale. Male hypopygium with the ninth tergite extensive, pale, with a deep 

 and narrow V-shaped median notch, the broad lateral lobes irregularly notched 

 and toothed, the most lateral tooth largest. Ninth pleurite complete, the 

 pleural appendages being long and slender; outer appendage cylindrical, clothed 

 with long, coarse yellow hairs ; inner appendage with the posterior margin 

 beautifully fringed with long flattened hairs. Ninth sternite with the caudal 

 inner angle with a pale, roughly oval lobe which is covered with a pale ap- 

 pressed pubescence and whose ventral angle bears a pencil of long reddish 

 hairs that are decussate with those of the opposite side across the genital 

 chamber. Eighth sternite bearing a broad, flattened, heart-shaped median lobe 

 that is provided with long, coarse, yellow hairs. 



Habitat. — Argentina. 



Holotype, J*, Province of Buenos Aires ( C. Bruch). 



Paratopotypes, 2 ^^. 



Tipiila brncJii is named in honor of Senor Charles Bruch. to 

 uhom I am indebted for many favors. The species agrees fairly 

 well with the description of T. nubifcra van dcr Wulp, but the pat- 

 tern of the thorax and wings is very different in the two species. 



Tipula wittei new species. 



Antcnnal flagcllum indistinctly bicolorous ; mesonotum dark gray with five 

 brown stripes, the three intermediate stripes capillary, the lateral stripes 

 broader; wings grayish, the stigma pale yellowish brown; abdominal tergites 

 brownish yellow with three dark brown stripes. 



Female. — Length, about 26 mm.; wing, 19.2 mm. 



